London time to New York time

--:--
--:--

New York is usually 5 hours behind London, both when the UK is on BST and the US on EDT, and when the UK is on GMT and the US on EST. For roughly three weeks a year, when the two countries switch clocks on different Sundays, the gap is only 4 hours.

Best overlap for calls and meetings

The transatlantic overlap runs from 9:00 to 12:30 in New York, which is 14:00 to 17:30 in London. That three-and-a-half-hour window is where most finance, media and legal calls between the two cities happen. London staff who need New York input on the same day usually aim for 14:00 London, as that is when the US morning begins. Calls after 17:30 London are possible but mean longer days on the British side.

London to New York hour by hour

LondonNew York
12:00 AM7:00 PM (prev day)
1:00 AM8:00 PM (prev day)
2:00 AM9:00 PM (prev day)
3:00 AM10:00 PM (prev day)
4:00 AM11:00 PM (prev day)
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Table worked out for 2026-10-15 with the real time-zone rules. When a daylight-saving change happens the gap shifts by an hour; the live clocks above always show the current difference.

The weeks when the gap is four hours

The US changes clocks on the second Sunday of March and the first Sunday of November. The UK uses the last Sunday of March and October. Between those dates the gap is four hours. In 2026 that happened from 8 March to 29 March, and it happens again from 25 October to 1 November.

Recurring meetings created in one city appear an hour earlier or later in the other during those weeks, which causes regular missed calls. Checking a live converter for those dates avoids it.

FAQ

What time is it in New York when it is 15:00 in London?

Usually 10:00, but 11:00 during the short periods when only one country has changed clocks.

When is the London to New York gap four hours in late 2026?

From 25 October 2026, when the UK falls back, until 1 November 2026, when the US does.

What time does Wall Street open in London?

The 9:30 New York open is 14:30 in London for most of the year.

City clocks

Other time differences

Related tools

· Written by Om Vaghani, ClockAura